Bumped to RC3

Author: Dean Wampler

README.md

@@ -22,6 +22,8 @@
 | November 25, 2020 | First Scala `3.0.0-M2` milestone changes |
 | December 19, 2020 | First Scala `3.0.0-M3` milestone changes |
 | February 21, 2021 | Scala `3.0.0-RC1`  updates |
+| April 3, 2021     | Scala `3.0.0-RC2`  updates |
+| April 24, 2021    | Scala `3.0.0-RC3`  updates |
 
 [![Join the chat at https://gitter.im/deanwampler/programming-scala-book-code-examples](https://badges.gitter.im/deanwampler/programming-scala-book-code-examples.svg)](https://gitter.im/deanwampler/programming-scala-book-code-examples?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 

build.sbt

@@ -3,27 +3,27 @@ lazy val root = project
   .settings(
     name := "programming-scala-3rd-ed-code-examples",
     description := "Code examples for Programming Scala, Third Edition (O'Reilly).",
-    version := "3.0.0-RC2-005",
-    scalaVersion := "3.0.0-RC2",
+    version := "3.0.0-RC3-001",
+    scalaVersion := "3.0.0-RC3",
     organization := "org.programming-scala",
     organizationName := "ProgrammingScala",
     organizationHomepage := Some(url("http://programming-scala.org")),
     homepage := Some(url("https://github.com/deanwampler/programming-scala-book-code-examples/")),
     licenses += "Apache2" -> url("http://www.apache.org/licenses/LICENSE-2.0"),
     maxErrors := 10,
     libraryDependencies ++= Seq(
-      "com.typesafe.akka"      %% "akka-actor-typed" % "2.6.13",
-      "com.typesafe.akka"      %% "akka-slf4j"       % "2.6.13",
+      "com.typesafe.akka"      %% "akka-actor-typed" % "2.6.14",
+      "com.typesafe.akka"      %% "akka-slf4j"       % "2.6.14",
       // Map over this sequence of Scala 2.X libraries & call withDottyCompat(...):
     ).map(dep => dep.withDottyCompat(scalaVersion.value)) ++ Seq(
       // Libraries that already fully support Dotty/Scala 3:
-      "org.typelevel"          %% "cats-core"        % "2.5.0",
+      "org.typelevel"          %% "cats-core"        % "2.6.0",
       "org.scala-lang"         %% "scala3-staging"   % scalaVersion.value,
-      "org.scala-lang.modules" %% "scala-parser-combinators" % "1.2.0-RC1",
+      "org.scala-lang.modules" %% "scala-parser-combinators" % "1.2.0-RC2",
       "ch.qos.logback"          % "logback-classic"  % "1.2.3",
       "org.scalacheck"         %% "scalacheck"       % "1.15.3" % Test,
-      "org.scalameta"          %% "munit"            % "0.7.23" % Test,
-      "org.scalameta"          %% "munit-scalacheck" % "0.7.23" % Test
+      "org.scalameta"          %% "munit"            % "0.7.25" % Test,
+      "org.scalameta"          %% "munit-scalacheck" % "0.7.25" % Test
     ),
 
     // For Scala 3 (Dotty)

src/script/scala/progscala3/patternmatching/Matchable.scala

@@ -3,7 +3,7 @@
 
 val iarray = IArray(1,2,3,4,5)
 iarray match
-  case a: Array[Int] => a(2) = 300
+  case a: Array[Int] => a(2) = 300   // Scala 3 warning!!
 println(iarray)
 // end::iarray[]